A description is given of a simple device that makes possible quantitative experiments on billiard-ball collisions. Data are presented to show that the 90°-angle rule for collisions of two balls of equal mass can be verified if steel balls are used on a soapy glass surface. Indication is given of the effects of rolling and of inelasticity when plastic balls are used.
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© 1963 American Association of Physics Teachers.
1963
American Association of Physics Teachers
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